#div1{
    width: 100%;
    height: 48px;
    background-color: black;
    opacity: 0.7;
    position: fixed;
    /* overflow: hidden; */
    display: flex;
    align-items: center;
    justify-content: space-around;
    z-index: 1;
}
#tb{
    display: flex;
    justify-content: space-evenly;
    width: 800px;
}
#dt1{
    background-size: 0 100%;
    height: 100%;
    padding-top: 50px;
}
#a{
    color: ivory;
    text-decoration: none; /*消除下划线*/
    font-weight: bold;/*字体*/
    padding: 45px 12px;

}
#a:hover{
    /* background-color: black; */
    color: mediumspringgreen;
}
.dropbtn {
    background-color: black;
    color: white;
    padding: 14px;
    font-size: 14px;
    border: none;
    cursor: pointer;
}

.dropdown {
    position: relative;/*相对定位*/
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;/*绝对定位*/
    background-color: black;
    min-width: 70px;
    /* box-shadow: 0px 6px 12px 0px rgba(0,0,0,0.2); */
}

.dropdown-content a {
    color: ivory;
    padding: 8px 10px;
    text-decoration: none;
    display: block;
}

.dropdown-content a:hover {
    background-color: ivory;
    color: mediumspringgreen;
    }

.dropdown:hover .dropdown-content {
    display: block;
    content: '';
}

.dropdown:hover .dropbtn {
    background-color: black;
    color: ivory;
}
.tpbj1{
    position: absolute;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-top: -5px;
    width: 100%;
}
.a1{
    position: relative;
    margin-top: -550px;
    margin-left: 260PX;
    font-size: 2rem;
    font-weight: 700;
    color: ivory;
}
#tp4{
    position: relative;
    width: 100%;
    height: 100%;
    padding-top: 0px;
    margin-top: 0px;
}
#z1{
    position: relative;
    margin-left: 260PX;
    margin-top: 40px;
    font-size: 2rem;
    font-weight: 700;
    color: ivory;
}
#dd{
    position: relative;
    margin-left: 240px;
    margin-top: 40px;
    display: flex;
    text-align: left;
}
#dd:hover{
    cursor: pointer;
}
.xdd{
    position: absolute;
    /* background: transparent; */
    height: .4rem;
    width: 2rem;
    background-color: mediumaquamarine;
    border-radius: 2rem;
    vertical-align:baseline;
    margin-left: 29px;
    /* cursor: pointer; */
    display: none;
}
#sst{
    position: relative;
    margin-left: 800px;
    margin-top: -370px;
}
#dd:hover{
    color: lightgreen;
}
#by1,#by2,#by3,#by4,#by5{
    position: relative;
    margin-left: 260PX;
    margin-top: 40px;
    color: ivory;
    height: 100px;
}
#by2,#by3,#by4,#by5{
    display: none;
}
#z2,#z3,#z4,#z5{
    display: none;
    position: relative;
    margin-left: 260PX;
    margin-top: 40px;
    font-size: 2rem;
    font-weight: 700;
    color: ivory;
}
#sst2,#sst3,#sst4,#sst5{
    display: none;
    position: relative;
}
#active1,#active2,#active3,#active4,#active5{
    display: none;
}
.a2{
    margin-top: 542px;
    padding-top: 57px;
    height: 210px;
}
.top6{
    position: relative;
    width: 100%;
    height: 700px;
    /* transform: scale(0.8,0.5);缩放  */
    background-image: url(https://litingmm.gitee.io/top_ad_pc/static/img/zh_banner3.0ea583fe.jpg);
    background-attachment: fixed;
    display: flex;
}
#wzjz{
    margin-top: 100px;
    color: ivory;
    text-align: center;
    width: 100%;
    margin-right: -450px;
}
.dhk{
    position: absolute;
    margin-top: 200px;
    margin-left: 320px;
    display: flex;
    justify-content: center;
    color: #727272;
}
#dhk1,#dhk2,#dhk3{
    background-color: rgba(0,0, 0, 0.5);
    width: 200px;
    height: 300px;
    text-align: center;
}
#dhk2{
    margin-left: 40px;
    margin-right: 40px;
}
#dh11,#dh12,#dh13{
    transform: scale(0.5,0.5);
}
#dh1,#dh2,#dh3{
    position: absolute;
    display: none;
    transform: scale(0.5,0.5);
    margin-left: -100px;
}
#p1{
    margin-top: 40px;
    font-size: 12px;
    text-align: left;
    padding-left: 20px;
}
.dh:hover #p1{
    color: ivory;
}
.dh:hover{
    transform: scale(1.2);
    transition: all 0.5s;
}
span{
    color: ivory;
}
.dh:hover span{
    color: turquoise;
}
.top7{
    position: absolute;
}
.top8{
    /* position: absolute; */
    padding-top: 200px;
}
.dbt{
    position: absolute;
    margin-top: -350px;
    margin-left: 290px;
    width: 900px;
}
.yjtp{
    margin-bottom: 20px;
    margin-right: 20px;
    /* transform: scale(0.7); */
    width: 185px;
    height: 70px;
}
.zdt{
    color: lawngreen;
    display: flex;
    justify-content: center;
    height: 40px;
    margin-top: 10px;
    margin-left: -100px;
}
#pp{
    font-size: 10px;
    color: ivory;
    margin-left: 200px;
}